package com.example.farmeri.tools;


import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.List;
/**
 * Create by weiqishan on 2020/5/6.
 * 日期工具类
 */
public class DataUtils {

    /*
     * 由于为了以后使用方便,所有方法的返回类型都设为了 java.util.Date 请在使用时根据自己的需要进行日期格式化处理,如:
     *
     * import java.text.SimpleDateFormat;SimpleDateFormat simpleDateFormat = new
     * SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String todayBegin =
     * simpleDateFormat.format
     * (DateUtils.getDayBegin());System.out.println(todayBegin );//输出结果为2017-10-26
     * 00:00:00
     */
        // 获取当天的开始时间
        public static java.util.Date getDayBegin() {
            Calendar cal = new GregorianCalendar();
            cal.set(Calendar.HOUR_OF_DAY, 0);
            cal.set(Calendar.MINUTE, 0);
            cal.set(Calendar.SECOND, 0);
            cal.set(Calendar.MILLISECOND, 0);
            return cal.getTime();
        }

        // 获取当天的结束时间
        public static java.util.Date getDayEnd() {
            Calendar cal = new GregorianCalendar();
            cal.set(Calendar.HOUR_OF_DAY, 23);
            cal.set(Calendar.MINUTE, 59);
            cal.set(Calendar.SECOND, 59);
            return cal.getTime();
        }

        // 获取昨天的开始时间
        public static Date getBeginDayOfYesterday() {
            Calendar cal = new GregorianCalendar();
            cal.setTime(getDayBegin());
            cal.add(Calendar.DAY_OF_MONTH, -1);
            return cal.getTime();
        }

        // 获取昨天的结束时间
        public static Date getEndDayOfYesterDay() {
            Calendar cal = new GregorianCalendar();
            cal.setTime(getDayEnd());
            cal.add(Calendar.DAY_OF_MONTH, -1);
            return cal.getTime();
        }

        // 获取明天的开始时间
        public static Date getBeginDayOfTomorrow() {
            Calendar cal = new GregorianCalendar();
            cal.setTime(getDayBegin());
            cal.add(Calendar.DAY_OF_MONTH, 1);
            return cal.getTime();
        }

        // 获取明天的结束时间
        public static Date getEndDayOfTomorrow() {
            Calendar cal = new GregorianCalendar();
            cal.setTime(getDayEnd());
            cal.add(Calendar.DAY_OF_MONTH, 1);
            return cal.getTime();
        }

        // 获取本周的开始时间
        @SuppressWarnings("unused")
        public static Date getBeginDayOfWeek() {
            Date date = new Date();
            if (date == null) {
                return null;
            }
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
            if (dayofweek == 1) {
                dayofweek += 7;
            }
            cal.add(Calendar.DATE, 2 - dayofweek);
            return getDayStartTime(cal.getTime());
        }

        // 获取本周的结束时间
        public static Date getEndDayOfWeek() {
            Calendar cal = Calendar.getInstance();
            cal.setTime(getBeginDayOfWeek());
            cal.add(Calendar.DAY_OF_WEEK, 6);
            Date weekEndSta = cal.getTime();
            return getDayEndTime(weekEndSta);
        }

        // 获取上周的开始时间
        @SuppressWarnings("unused")
        public static Date getBeginDayOfLastWeek() {
            Date date = new Date();
            if (date == null) {
                return null;
            }
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            int dayofweek = cal.get(Calendar.DAY_OF_WEEK);
            if (dayofweek == 1) {
                dayofweek += 7;
            }
            cal.add(Calendar.DATE, 2 - dayofweek - 7);
            return getDayStartTime(cal.getTime());
        }

        // 获取上周的结束时间
        public static Date getEndDayOfLastWeek() {
            Calendar cal = Calendar.getInstance();
            cal.setTime(getBeginDayOfLastWeek());
            cal.add(Calendar.DAY_OF_WEEK, 6);
            Date weekEndSta = cal.getTime();
            return getDayEndTime(weekEndSta);
        }

        // 获取本月的开始时间
        public static Date getBeginDayOfMonth() {
            Calendar calendar = Calendar.getInstance();
            calendar.set(getNowYear(), getNowMonth() - 1, 1);
            return getDayStartTime(calendar.getTime());
        }

        // 获取本月的结束时间
        public static Date getEndDayOfMonth() {
            Calendar calendar = Calendar.getInstance();
            calendar.set(getNowYear(), getNowMonth() - 1, 1);
            int day = calendar.getActualMaximum(5);
            calendar.set(getNowYear(), getNowMonth() - 1, day);
            return getDayEndTime(calendar.getTime());
        }

        // 获取上月的开始时间
        public static Date getBeginDayOfLastMonth() {
            Calendar calendar = Calendar.getInstance();
            calendar.set(getNowYear(), getNowMonth() - 2, 1);
            return getDayStartTime(calendar.getTime());
        }

        // 获取上月的结束时间
        public static Date getEndDayOfLastMonth() {
            Calendar calendar = Calendar.getInstance();
            calendar.set(getNowYear(), getNowMonth() - 2, 1);
            int day = calendar.getActualMaximum(5);
            calendar.set(getNowYear(), getNowMonth() - 2, day);
            return getDayEndTime(calendar.getTime());
        }

        // 获取本年的开始时间
        public static Date getBeginDayOfYear() {
            Calendar cal = Calendar.getInstance();
            cal.set(Calendar.YEAR, getNowYear());
            cal.set(Calendar.MONTH, Calendar.JANUARY);
            cal.set(Calendar.DATE, 1);
            return getDayStartTime(cal.getTime());
        }

        // 获取本年的结束时间
        public static java.util.Date getEndDayOfYear() {
            Calendar cal = Calendar.getInstance();
            cal.set(Calendar.YEAR, getNowYear());
            cal.set(Calendar.MONTH, Calendar.DECEMBER);
            cal.set(Calendar.DATE, 31);
            return getDayEndTime(cal.getTime());
        }

        // 获取某个日期的开始时间
        public static Timestamp getDayStartTime(Date d) {
            Calendar calendar = Calendar.getInstance();
            if (null != d)
                calendar.setTime(d);
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH), 0, 0, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            return new Timestamp(calendar.getTimeInMillis());
        }

        // 获取某个日期的结束时间
        public static Timestamp getDayEndTime(Date d) {
            Calendar calendar = Calendar.getInstance();
            if (null != d)
                calendar.setTime(d);
            calendar.set(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH),
                    calendar.get(Calendar.DAY_OF_MONTH), 23, 59, 59);
            calendar.set(Calendar.MILLISECOND, 999);
            return new Timestamp(calendar.getTimeInMillis());
        }

        // 获取今年是哪一年
        public static Integer getNowYear() {
            Date date = new Date();
            GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
            gc.setTime(date);
            return Integer.valueOf(gc.get(1));
        }

        // 获取本月是哪一月
        public static int getNowMonth() {
            Date date = new Date();
            GregorianCalendar gc = (GregorianCalendar) Calendar.getInstance();
            gc.setTime(date);
            return gc.get(2) + 1;
        }

        // 两个日期相减得到的天数
        public static int getDiffDays(Date beginDate, Date endDate) {
            if (beginDate == null || endDate == null) {
                throw new IllegalArgumentException("getDiffDays param is null!");
            }
            long diff = (endDate.getTime() - beginDate.getTime())
                    / (1000 * 60 * 60 * 24);
            int days = new Long(diff).intValue();
            return days;
        }

        // 两个日期相减得到的毫秒数
        public static long dateDiff(Date beginDate, Date endDate) {
            long date1ms = beginDate.getTime();
            long date2ms = endDate.getTime();
            return date2ms - date1ms;
        }

        // 获取两个日期中的最大日期
        public static Date max(Date beginDate, Date endDate) {
            if (beginDate == null) {
                return endDate;
            }
            if (endDate == null) {
                return beginDate;
            }
            if (beginDate.after(endDate)) {
                return beginDate;
            }
            return endDate;
        }

        // 获取两个日期中的最小日期
        public static Date min(Date beginDate, Date endDate) {
            if (beginDate == null) {
                return endDate;
            }
            if (endDate == null) {
                return beginDate;
            }
            if (beginDate.after(endDate)) {
                return endDate;
            }
            return beginDate;
        }

        // 返回某月该季度的第一个月
        public static Date getFirstSeasonDate(Date date) {
            final int[] SEASON = { 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4 };
            Calendar cal = Calendar.getInstance();
            cal.setTime(date);
            int sean = SEASON[cal.get(Calendar.MONTH)];
            cal.set(Calendar.MONTH, sean * 3 - 3);
            return cal.getTime();
        }

        // 返回某个日期下几天的日期
        public static Date getNextDay(Date date, int i) {
            Calendar cal = new GregorianCalendar();
            cal.setTime(date);
            cal.set(Calendar.DATE, cal.get(Calendar.DATE) + i);
            return cal.getTime();
        }

        // 返回某个日期前几天的日期
        public static Date getFrontDay(Date date, int i) {
            Calendar cal = new GregorianCalendar();
            cal.setTime(date);
            cal.set(Calendar.DATE, cal.get(Calendar.DATE) - i);
            return cal.getTime();
        }

        // 获取某年某月到某年某月按天的切片日期集合(间隔天数的集合)
        @SuppressWarnings({ "rawtypes", "unchecked" })
        public static List getTimeList(int beginYear, int beginMonth, int endYear,
                                       int endMonth, int k) {
            List list = new ArrayList();
            if (beginYear == endYear) {
                for (int j = beginMonth; j <= endMonth; j++) {
                    list.add(getTimeList(beginYear, j, k));
                }
            } else {
                {
                    for (int j = beginMonth; j < 12; j++) {
                        list.add(getTimeList(beginYear, j, k));
                    }
                    for (int i = beginYear + 1; i < endYear; i++) {
                        for (int j = 0; j < 12; j++) {
                            list.add(getTimeList(i, j, k));
                        }
                    }
                    for (int j = 0; j <= endMonth; j++) {
                        list.add(getTimeList(endYear, j, k));
                    }
                }
            }
            return list;
        }

        // 获取某年某月按天切片日期集合(某个月间隔多少天的日期集合)
        @SuppressWarnings({ "unchecked", "rawtypes" })
        public static List getTimeList(int beginYear, int beginMonth, int k) {
            List list = new ArrayList();
            Calendar begincal = new GregorianCalendar(beginYear, beginMonth, 1);
            int max = begincal.getActualMaximum(Calendar.DATE);
            for (int i = 1; i < max; i = i + k) {
                list.add(begincal.getTime());
                begincal.add(Calendar.DATE, k);
            }
            begincal = new GregorianCalendar(beginYear, beginMonth, max);
            list.add(begincal.getTime());
            return list;
        }


    //日期转换为年月日字符串
    public static String getStringDateShort(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("MM月dd日");
        String dateString = formatter.format(date);
        return dateString;
    }

    //日期转换为年月日字符串
    public static String getStringDate(Date date) {
        SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String dateString = formatter.format(date);
        return dateString;
    }

}
